187466990225 has 6 divisors (see below), whose sum is σ = 232459067910. Its totient is φ = 149973592160.

The previous prime is 187466990197. The next prime is 187466990239. The reversal of 187466990225 is 522099664781.

It is a happy number.

187466990225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 400360081 + 187066630144 = 20009^2 + 432512^2 .

It is not a de Polignac number, because 187466990225 - 2¹² = 187466986129 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3749339780 + ... + 3749339829.

It is an arithmetic number, because the mean of its divisors is an integer number (38743177985).

Almost surely, 2^187466990225 is an apocalyptic number.

It is an amenable number.

187466990225 is a deficient number, since it is larger than the sum of its proper divisors (44992077685).

187466990225 is an equidigital number, since it uses as much as digits as its factorization.

187466990225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498679619 (or 7498679614 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 187466990225 in words is "one hundred eighty-seven billion, four hundred sixty-six million, nine hundred ninety thousand, two hundred twenty-five".